A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polyether end group functionalized super early strength type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a polyether end group functionalized super-early-strength polycarboxylate superplasticizer and a preparation method thereof. The polyether end group functionalized super-early-strength polycarboxylate superplasticizer is prepared from HPEG, modified polyether LPEG, acrylic acid, acrylamide, an initiator, a reducing agent, a chain transfer agent, deionized water and caustic soda liquid through reaction. The preparation method comprises the following steps: preparing a modified polyether macromonomer (CA-HPEG) with terminal hydroxyl grafted carboxyl through alcoholysis of cyclic dianhydride, then carrying out amidation reaction with amino siloxane to prepare modified polyether LPEG with a long-chain branch end group having an amino and silyl cyclic structure, and introducing the prepared modified polyether LPEG and an amide monomer into a copolymerization reaction to prepare a long-side-chain, high-molecular-weight, high-molecular-weight and high-molecular-weight polyether copolymer. The invention relates to a super-early-strength polycarboxylate superplasticizer with a short main chain.
本发明公开了一种聚醚端基功能化超早强型聚羧酸减水剂及其制备方法，由HPEG、改性聚醚LPEG、丙烯酸、丙烯酰胺、引发剂、还原剂、链转移剂、去离子水和液碱反应制成。本发明通过环状二酸酐的醇解制备端羟基接枝羧基的改性聚醚大单体(CA‑HPEG)，再与氨基硅氧烷进行酰胺化反应，制备长支链端基为带有胺基、硅烷基环状结构的改性聚醚LPEG，所制得改性聚醚LPEG与酰胺类单体引入共聚反应中，制备长侧链，短主链的超早强型聚羧酸减水剂。
Polyether end group functionalized super early strength type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a polyether end group functionalized super-early-strength polycarboxylate superplasticizer and a preparation method thereof. The polyether end group functionalized super-early-strength polycarboxylate superplasticizer is prepared from HPEG, modified polyether LPEG, acrylic acid, acrylamide, an initiator, a reducing agent, a chain transfer agent, deionized water and caustic soda liquid through reaction. The preparation method comprises the following steps: preparing a modified polyether macromonomer (CA-HPEG) with terminal hydroxyl grafted carboxyl through alcoholysis of cyclic dianhydride, then carrying out amidation reaction with amino siloxane to prepare modified polyether LPEG with a long-chain branch end group having an amino and silyl cyclic structure, and introducing the prepared modified polyether LPEG and an amide monomer into a copolymerization reaction to prepare a long-side-chain, high-molecular-weight, high-molecular-weight and high-molecular-weight polyether copolymer. The invention relates to a super-early-strength polycarboxylate superplasticizer with a short main chain.
本发明公开了一种聚醚端基功能化超早强型聚羧酸减水剂及其制备方法，由HPEG、改性聚醚LPEG、丙烯酸、丙烯酰胺、引发剂、还原剂、链转移剂、去离子水和液碱反应制成。本发明通过环状二酸酐的醇解制备端羟基接枝羧基的改性聚醚大单体(CA‑HPEG)，再与氨基硅氧烷进行酰胺化反应，制备长支链端基为带有胺基、硅烷基环状结构的改性聚醚LPEG，所制得改性聚醚LPEG与酰胺类单体引入共聚反应中，制备长侧链，短主链的超早强型聚羧酸减水剂。
Polyether end group functionalized super early strength type polycarboxylate superplasticizer and preparation method thereof
一种聚醚端基功能化超早强型聚羧酸减水剂及其制备方法
KANG JINGXIN (author) / LYU YUJIE (author) / XU ZECHENG (author) / WU YIXIN (author) / XIAO ZHAOYING (author)
2023-08-04
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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Super early strength polycarboxylate superplasticizer and preparation method thereof
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Super-early-strength polycarboxylate superplasticizer and preparation method thereof
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